Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 698-00-25 PIECE 7 found under O Ring by Circor Intl Inc. The National Stock Number assigned to this part is 5331013035388, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 698-00-25 PIECE 7.